Gun I am working on is a 5mm Model 592M. Bolt handle is broken off. Are these handles threaded in to the bolt body? (don't want to go in with an easy out if it's braised or welded)

I have located a 581 bolt body and will buy it to get the handle if the fix is that easy.

"I have always disliked the words 'authority' and 'expert' when applied to those who write about guns, shooting,and hunting. I have never set myself up as either."
Jack O'Connor